225201213 has 12 divisors (see below), whose sum is σ = 325508508. Its totient is φ = 150033600.

The previous prime is 225201209. The next prime is 225201241. The reversal of 225201213 is 312102522.

225201213 is a `hidden beast` number, since 22 + 520 + 121 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 47858724 + 177342489 = 6918^2 + 13317^2 .

It is not a de Polignac number, because 225201213 - 2² = 225201209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225201283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7363 + ... + 22463.

It is an arithmetic number, because the mean of its divisors is an integer number (27125709).

Almost surely, 2^225201213 is an apocalyptic number.

It is an amenable number.

225201213 is a deficient number, since it is larger than the sum of its proper divisors (100307295).

225201213 is a wasteful number, since it uses less digits than its factorization.

225201213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16764 (or 16761 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 225201213 is about 15006.7056011638. The cubic root of 225201213 is about 608.4014519246.

Adding to 225201213 its reverse (312102522), we get a palindrome (537303735).

The spelling of 225201213 in words is "two hundred twenty-five million, two hundred one thousand, two hundred thirteen".